MongoDB and Mongoose - Install and Set Up Mongoose TIMEOUT OCCURRED

MongoDB and Mongoose - Install and Set Up Mongoose TIMEOUT OCCURRED
0

#1

Link to Challenge : https://learn.freecodecamp.org/apis-and-microservices/mongodb-and-mongoose/install-and-set-up-mongoose
Required to pass challenge :
"mongoose" should be connected to a database
"mongodb" dependency should be in package.json
"mongoose" dependency should be in package.json

NOTE : With the help of the following code, i was able to complete some part of challenge, only part which remaining is “mongoose” should be connected to a database

Link : https://impossible-sale.glitch.me

Server.js

var express = require('express');
var app = express();

var fs = require('fs');
var path = require('path');
var bodyParser = require('body-parser');
var router = express.Router();
const mongoose = require('mongoose');
mongoose.connect(process.env.MONGO_URI, { useNewUrlParser: true });

var enableCORS = function(req, res, next) {
  if (!process.env.DISABLE_XORIGIN) {
    var allowedOrigins = ['https://marsh-glazer.gomix.me','https://narrow-plane.gomix.me', 'https://www.freecodecamp.com'];
    var origin = req.headers.origin;
    if(!process.env.XORIGIN_RESTRICT || allowedOrigins.indexOf(origin) > -1) {
      console.log(req.method);
      res.set({
        "Access-Control-Allow-Origin" : origin,
        "Access-Control-Allow-Methods" : "GET, POST, OPTIONS",
        "Access-Control-Allow-Headers" : "Origin, X-Requested-With, Content-Type, Accept"
      });
    }
  }
  next();
};

// global setting for safety timeouts to handle possible
// wrong callbacks that will never be called
var timeout = 10000;

app.use(bodyParser.urlencoded({extended: 'false'}));
app.use(bodyParser.json());

app.get('/', function(req, res) {
  res.sendFile(path.join(__dirname, 'views', 'index.html'));
});

router.get('/file/*?', function(req, res, next) {
  if(req.params[0] === '.env') { return next({status: 401, message: 'ACCESS DENIED'}) }
  fs.readFile(path.join(__dirname, req.params[0]), function(err, data){
    if(err) { return next(err) }
    res.type('txt').send(data.toString());
  });
});
 
app.use('/_api', enableCORS, router);

var listener = app.listen(process.env.PORT || 3000 , function () {
  console.log('Your app is listening on port ' + listener.address().port);
});

Package.json

{
  "//1": "describes your app and its dependencies",
  "//2": "https://docs.npmjs.com/files/package.json",
  "//3": "updating this file will download and update your packages",
  "name": "my-glitch-app",
  "version": "0.0.1",
  "description": "What am I about?",
  "main": "server.js",
  "scripts": {
    "start": "node server.js"
  },
  "dependencies": {
    "express": "^4.16.4",
    "mongoose": "^5.4.0",
    "mongodb": "^2.0.0"
  },
  "engines": {
    "node": "8.x"
  },
  "repository": {
    "url": "https://glitch.com/edit/#!/welcome-project"
  },
  "license": "MIT",
  "keywords": [
    "node",
    "glitch",
    "express"
  ]
}

.env :

SECRET=
MADE_WITH=
MONGO_URI=mongodb://XXXXXX:[email protected]:37660/firstproject

please help me as iv got stuck since a week or so, went through alot of other pages but no solution,
Thanks in Advance


#2

Check out the Mongoose documentation. From the ‘Getting Started’ page:

var db = mongoose.connection;
db.on('error', console.error.bind(console, 'connection error:'));
db.once('open', function() {
  // we're connected!
});

You can use this to see if you’re connected.

https://mongoosejs.com/docs/index.html


#3

Yes, it shows connected but still the same error, really appreciate your quick help
Error coming :

<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Cannot POST /_api/mongoose-model</pre>
</body>
</html>

#4

Is the server.js file you’ve posted here the complete file? As far as I know, you’re not supposed to edit that file. At the very top of my server.js is the following:

/********************************************
 * DO NOT EDIT THIS FILE
 * the verification process may break
 *******************************************/

If what you’ve posted of the server.js file is the complete file, either because you’ve edited it, or that’s all there was (a glitch with Glitch, maybe?), there isn’t a method to handle POST requests in your server.js, which could be giving you that error. Here is what my unedited server.js file looks like.

/********************************************
 * DO NOT EDIT THIS FILE
 * the verification process may break
 *******************************************/

var express = require('express');
var app = express();
try{
  var mongoose = require('mongoose');
} catch (e) {
  console.log(e);
}
var fs = require('fs');
var path = require('path');
var bodyParser = require('body-parser');
var router = express.Router();

var enableCORS = function(req, res, next) {
  if (!process.env.DISABLE_XORIGIN) {
    var allowedOrigins = ['https://marsh-glazer.gomix.me','https://narrow-plane.gomix.me', 'https://www.freecodecamp.com'];
    var origin = req.headers.origin;
    if(!process.env.XORIGIN_RESTRICT || allowedOrigins.indexOf(origin) > -1) {
      console.log(req.method);
      res.set({
        "Access-Control-Allow-Origin" : origin,
        "Access-Control-Allow-Methods" : "GET, POST, OPTIONS",
        "Access-Control-Allow-Headers" : "Origin, X-Requested-With, Content-Type, Accept"
      });
    }
  }
  next();
};

// global setting for safety timeouts to handle possible
// wrong callbacks that will never be called
var timeout = 10000;

app.use(bodyParser.urlencoded({extended: 'false'}));
app.use(bodyParser.json());

app.get('/', function(req, res) {
  res.sendFile(path.join(__dirname, 'views', 'index.html'));
});

router.get('/file/*?', function(req, res, next) {
  if(req.params[0] === '.env') { return next({status: 401, message: 'ACCESS DENIED'}) }
  fs.readFile(path.join(__dirname, req.params[0]), function(err, data){
    if(err) { return next(err) }
    res.type('txt').send(data.toString());
  });
});

router.get('/is-mongoose-ok', function(req, res) {
  if (mongoose) {
    res.json({isMongooseOk: !!mongoose.connection.readyState})
  } else {
    res.json({isMongooseOk: false})
  }
});

var Person = require('./myApp.js').PersonModel;

router.use(function(req, res, next) {
  if(req.method !== 'OPTIONS' && Person.modelName !== 'Person') {
    return next({message: 'Person Model is not correct'});
  }
  next();
});

router.post('/mongoose-model', function(req, res, next) {
  // try to create a new instance based on their model
  // verify it's correctly defined in some way
  var p;
  p = new Person(req.body);
  res.json(p);
});

var createPerson = require('./myApp.js').createAndSavePerson;
router.get('/create-and-save-person', function(req, res, next) {
  // in case of incorrect function use wait timeout then respond
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  createPerson(function(err, data) {
    clearTimeout(t);
    if(err) { return (next(err)); }
    if(!data) {
      console.log('Missing `done()` argument');
      return next({message: 'Missing callback argument'});
    }
     Person.findById(data._id, function(err, pers) {
       if(err) { return (next(err)); }
       res.json(pers);
       pers.remove();
     });
  });
});

var createPeople = require('./myApp.js').createManyPeople;
router.post('/create-many-people', function(req, res, next) {
  Person.remove({}, function(err) {
    if(err) { return (next(err)); }
    // in case of incorrect function use wait timeout then respond
    var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
    createPeople(req.body, function(err, data) {
      clearTimeout(t);
      if(err) { return (next(err)); }
      if(!data) {
        console.log('Missing `done()` argument');
        return next({message: 'Missing callback argument'});
      }
       Person.find({}, function(err, pers){
         if(err) { return (next(err)); }
         res.json(pers);
         Person.remove().exec();
       });
    });
  });
});

var findByName = require('./myApp.js').findPeopleByName;
router.post('/find-all-by-name', function(req, res, next) {
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  Person.create(req.body, function(err, pers) {
    if(err) { return next(err) }
    findByName(pers.name, function(err, data) {
      clearTimeout(t);
      if(err) { return next(err) }
      if(!data) {
        console.log('Missing `done()` argument');
        return next({message: 'Missing callback argument'});
      }
      res.json(data);
      Person.remove().exec();
    });
  });
});

var findByFood = require('./myApp.js').findOneByFood;
router.post('/find-one-by-food', function(req, res, next) {
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  var p = new Person(req.body);
  p.save(function(err, pers) {
    if(err) { return next(err) }
    findByFood(pers.favoriteFoods[0], function(err, data) {
      clearTimeout(t);
      if(err) { return next(err) }
      if(!data) {
        console.log('Missing `done()` argument');
        return next({message: 'Missing callback argument'});
      }
      res.json(data);
      p.remove();
    });
  });
});

var findById = require('./myApp.js').findPersonById;
router.get('/find-by-id', function(req, res, next) {
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  var p = new Person({name: 'test', age: 0, favoriteFoods: ['none']});
  p.save(function(err, pers) {
    if(err) { return next(err) }
    findById(pers._id, function(err, data) {
      clearTimeout(t);
      if(err) { return next(err) }
      if(!data) {
        console.log('Missing `done()` argument');
        return next({message: 'Missing callback argument'});
      }
      res.json(data);
      p.remove();
    });
  });
});

var findEdit = require('./myApp.js').findEditThenSave;
router.post('/find-edit-save', function(req, res, next) {
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  var p = new Person(req.body);
  p.save(function(err, pers) {
    if(err) { return next(err) }
    try {
      findEdit(pers._id, function(err, data) {
        clearTimeout(t);
        if(err) { return next(err) }
        if(!data) {
          console.log('Missing `done()` argument');
          return next({message: 'Missing callback argument'});
        }
        res.json(data);
        p.remove();
      });
    } catch (e) {
      console.log(e);
      return next(e);
    }
  });
});

var update = require('./myApp.js').findAndUpdate;
router.post('/find-one-update', function(req, res, next) {
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  var p = new Person(req.body);
  p.save(function(err, pers) {
    if(err) { return next(err) }
    try {
      update(pers.name, function(err, data) {
        clearTimeout(t);
        if(err) { return next(err) }
        if (!data) {
          console.log('Missing `done()` argument');
          return next({ message: 'Missing callback argument' });
        }
        res.json(data);
        p.remove();
      });
    } catch (e) {
      console.log(e);
      return next(e);
    }
  });
});

var removeOne = require('./myApp.js').removeById;
router.post('/remove-one-person', function(req, res, next) {
  Person.remove({}, function(err) {
    if(err) if(err) { return next(err) }
    var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
    var p = new Person(req.body);
    p.save(function(err, pers) {
      if(err) { return next(err) }
      try {
        removeOne(pers._id, function(err, data) {
          clearTimeout(t);
          if(err) { return next(err) }
          if(!data) {
            console.log('Missing `done()` argument');
            return next({message: 'Missing callback argument'});
          }
          console.log(data)
          Person.count(function(err, cnt) {
            if(err) { return next(err) }
            data = data.toObject();
            data.count = cnt;
            console.log(data)
            res.json(data);
          })
        });
      } catch (e) {
        console.log(e);
        return next(e);
      }
    });
  });
});

var removeMany = require('./myApp.js').removeManyPeople;
router.post('/remove-many-people', function(req, res, next) {
  Person.remove({}, function(err) {
    if(err) { return next(err) }
    var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
    Person.create(req.body, function(err, pers) {
      if(err) { return next(err) }
      try {
        removeMany(function(err, data) {
          clearTimeout(t);
          if(err) { return next(err) }
          if(!data) {
            console.log('Missing `done()` argument');
            return next({message: 'Missing callback argument'});
          }
          Person.count(function(err, cnt) {
            if(err) { return next(err) }
            if (data.ok === undefined) {
              // for mongoose v4
               try {
                data = JSON.parse(data);
              } catch (e) {
                console.log(e);
                return next(e);
              }
            }
            res.json({
              n: data.n,
              count: cnt,
              ok: data.ok
            });
          })
        });
      } catch (e) {
        console.log(e);
        return next(e);
      }
    });
  })
});

var chain = require('./myApp.js').queryChain;
router.post('/query-tools', function(req, res, next) {
  var t = setTimeout(() => { next({message: 'timeout'}) }, timeout);
  Person.remove({}, function(err) {
    if(err) if(err) { return next(err) }
    Person.create(req.body, function(err, pers) {
      if(err) { return next(err) }
      try {
        chain(function(err, data) {
          clearTimeout(t);
          if(err) { return next(err) }
          if (!data) {
            console.log('Missing `done()` argument');
            return next({ message: 'Missing callback argument' });
          }
          res.json(data);
        });
      } catch (e) {
        console.log(e);
        return next(e);
      }
    });
  })
});

app.use('/_api', enableCORS, router);

// Error handler
app.use(function(err, req, res, next) {
  if(err) {
    res.status(err.status || 500)
      .type('txt')
      .send(err.message || 'SERVER ERROR');
  }
});

// Unmatched routes handler
app.use(function(req, res){
  if(req.method.toLowerCase() === 'options') {
    res.end();
  } else {
    res.status(404).type('txt').send('Not Found');
  }
})

var listener = app.listen(process.env.PORT || 3000 , function () {
  console.log('Your app is listening on port ' + listener.address().port);
});

/********************************************
 * DO NOT EDIT THIS FILE
 * the verification process may break
 *******************************************/

The file you should be working on in these exercises is myApp.js, or at least it was when I went through this section.


#5

Thank you very much, it really helped.
Yes, i had changed the server.js by mistake and also, had not created myApp.js yet
Once again thank you very much my dear friend